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Finding the Fourth Proportional to 1,424,326, 1,965,569.88 and 788,422

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Solution

The fourth proportional to 1,424,326, 1,965,569.88 and 788,422 is: 1,088,022.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,326 : 1,965,569.88 = 788,422 : x
  2. Step 2: Convert to fraction form
    1,424,326/1,965,569.88 = 788,422/x
  3. Step 3: Cross multiply
    1,424,326x = 1,965,569.88 × 788,422
  4. Step 4: Simplify right side
    1,424,326x = 1,549,698,535,929.36
  5. Step 5: Solve for x
    x = 1,549,698,535,929.36/1,424,326
  6. Step 6: Final answer
    x = 1,088,022.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.